{"id":11699,"date":"2026-05-07T14:38:09","date_gmt":"2026-05-07T14:38:09","guid":{"rendered":"https:\/\/hn.endesarrollo.pro\/?p=11699"},"modified":"2026-05-16T10:22:33","modified_gmt":"2026-05-16T10:22:33","slug":"rearing-period-9-15-weeks","status":"publish","type":"post","link":"https:\/\/hn-int.com\/es\/rearing-period-9-15-weeks\/","title":{"rendered":"Rearing period (9 \u2013 15 weeks)"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"11699\" class=\"elementor elementor-11699\" data-elementor-settings=\"{&quot;ha_cmc_init_switcher&quot;:&quot;no&quot;}\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3c3f4d4 e-flex e-con-boxed e-con e-parent\" data-id=\"3c3f4d4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e4809d6 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"e4809d6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Body weight<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d4ec326 e-con-full e-flex e-con e-child\" data-id=\"d4ec326\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-07f89fb elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"07f89fb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Weight gain slows during this period. That is especially true for the weekly percentage increase of body weight. However, the growth rate must be always maintained throughout this period.<\/p><p>Most of the skeleton and muscular systems have already been formed by now.<\/p><p>On the other hand, fat disposal improves during this period. A correct fat level in the body is necessary to achieve the production peak. Over fat females will face many issues in production (prolapse and pecking late in production) while overfat males could have fertility problems. Avoid over-fattening.<\/p><p>The feed intake is higher than in previous weeks. The birds may be given a more diluted feed.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2d1daef elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"2d1daef\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">If birds are within the weight standard or slightly above:<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b19bf7b elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"b19bf7b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Train feed intake capacity for the production peak challenge<\/li><li>Promote weight CV<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d6c640 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"3d6c640\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">If birds are under the standard weight<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-753b10e elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"753b10e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Some compensatory weight can be gained by maintaining grower feed for several weeks. However, this is very limited and the production period should be delayed.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7835212 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"7835212\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t*For weighing protocol see page 70.\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d13a946 elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"d13a946\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"572\" height=\"888\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_rearing_period.webp\" class=\"attachment-full size-full wp-image-11708\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_rearing_period.webp 572w, https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_rearing_period-193x300.webp 193w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Body weight in rearing - Brown Nick<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f5e26f0 e-con-full e-flex e-con e-child\" data-id=\"f5e26f0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e20314c elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"e20314c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"572\" height=\"888\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_coral_rearing_period.webp\" class=\"attachment-full size-full wp-image-11707\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_coral_rearing_period.webp 572w, https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_coral_rearing_period-193x300.webp 193w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Body weight in rearing - Coral<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c3eed3b elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"c3eed3b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"577\" height=\"888\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_crystal_nick_rearing_period.webp\" class=\"attachment-full size-full wp-image-11706\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_crystal_nick_rearing_period.webp 577w, https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_crystal_nick_rearing_period-195x300.webp 195w\" sizes=\"(max-width: 577px) 100vw, 577px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Body weight in rearing - Crystal Nick<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7feb919 elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"7feb919\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"574\" height=\"888\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_nick_chick_rearing_period.webp\" class=\"attachment-full size-full wp-image-11704\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_nick_chick_rearing_period.webp 574w, https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_nick_chick_rearing_period-194x300.webp 194w\" sizes=\"(max-width: 574px) 100vw, 574px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Body weight in rearing - Nick Chick<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3e3231f elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"3e3231f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"576\" height=\"888\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_super_nick_rearing_period.webp\" class=\"attachment-full size-full wp-image-11703\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_super_nick_rearing_period.webp 576w, https:\/\/hn-int.com\/wp-content\/uploads\/body_weight_in_rearing_super_nick_rearing_period-195x300.webp 195w\" sizes=\"(max-width: 576px) 100vw, 576px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Body weight in rearing - Super Nick<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-75c951e e-flex e-con-boxed e-con e-parent\" data-id=\"75c951e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-90863ce elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"90863ce\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Feed intake training<\/h2>\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-643c3d0 e-con-full e-flex e-con e-child\" data-id=\"643c3d0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d675be4 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"d675be4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>During the last week of the rearing period, the nutritional requirement is not very high. However, it will change dramatically in the first weeks of production. To help the hens deal with this challenge it is beneficial to train them to increase their feed intake during the end of the rearing period.\u2028To do this, try:<\/p><ul><li><strong>Diluted feed:<\/strong> From 10 to 15 weeks, it can be useful to switch to a feed (2700 Kcal, 15% BP, 4.5% fiber) that promotes feed intake.<\/li><li><strong>Feed distribution program:<\/strong> Allow hens to empty the feeders completely during the day.<\/li><li><strong>Move feed for the next day.<\/strong> Once a week, you can withhold feed in the afternoon (20\u201330 % daily ration) and feed it the next morning instead. Check for uniform distribution and do not reduce the two-day ration.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-51d6b1f elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"51d6b1f\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"512\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/Feed-intake-training-Rearing-period.png\" class=\"attachment-full size-full wp-image-11701\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/Feed-intake-training-Rearing-period.png 512w, https:\/\/hn-int.com\/wp-content\/uploads\/Feed-intake-training-Rearing-period-300x300.png 300w, https:\/\/hn-int.com\/wp-content\/uploads\/Feed-intake-training-Rearing-period-150x150.png 150w\" sizes=\"(max-width: 512px) 100vw, 512px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Gizzard with (left) or without (right) feed intake training<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8cfeab8 e-flex e-con-boxed e-con e-parent\" data-id=\"8cfeab8\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e80d569 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"e80d569\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Attn: this is only possible if the breeders are kept at the right stocking density and there is enough feeder space.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f865b6e e-flex e-con-boxed e-con e-parent\" data-id=\"f865b6e\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2f38d45 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"2f38d45\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>The feeding program should be similar to the one the pullets will have in production.<br \/><br \/>You can start this program as soon as 5\u20136 weeks of age (growing period) when breeders are spread over all cages, or have access to all the living space in floor\/aviary systems, body weights (females and males) are at or above standard and uniformity is above 85%.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-d5c1b4a elementor-widget__width-initial ha-has-bg-overlay elementor-widget elementor-widget-image\" data-id=\"d5c1b4a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1658\" height=\"478\" src=\"https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period.webp\" class=\"attachment-full size-full wp-image-11702\" alt=\"\" srcset=\"https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period.webp 1658w, https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period-300x86.webp 300w, https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period-1024x295.webp 1024w, https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period-768x221.webp 768w, https:\/\/hn-int.com\/wp-content\/uploads\/feed_distribution_in_rearing_from_10_to_16_weeks_rearing_period-1536x443.webp 1536w\" sizes=\"(max-width: 1658px) 100vw, 1658px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Feed distribution in rearing from 10 to 16 weeks<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-86a37e0 e-flex e-con-boxed e-con e-parent\" data-id=\"86a37e0\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-16fa348 elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"16fa348\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Sexing errors<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6b9f9d3 elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"6b9f9d3\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Even with good hatchery practice, some males will be confused with females and will be delivered and vice versa: some females will be delivered as males. such. It is best to separate them from the hens as soon as they are identified. By 7 weeks or earlier, this should be very evident and this task can be easily performed. Non-productive hens can also be separated from the flock at the same time.<br \/><br \/>When white males are not comb treated, only mix with females when all the sexing errors were culled (around 7 weeks of age).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-afa78da e-con-full e-flex e-con e-child\" data-id=\"afa78da\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;_ha_eqh_enable&quot;:false}\">\n\t\t<div class=\"elementor-element elementor-element-2f780dd e-con-full e-flex e-con e-child\" data-id=\"2f780dd\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;_ha_eqh_enable&quot;:false}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-51d261a elementor-widget__width-initial elementor-widget elementor-widget-heading\" data-id=\"51d261a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">Key points<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21ac8cb elementor-widget__width-initial elementor-widget elementor-widget-text-editor\" data-id=\"21ac8cb\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<ul><li>Ensure body weight gain and correct development by maintaining feed consumption.<\/li><li>Train hens to develop a good feed intake capacity by working with diluted feed and adapted feeding times.<\/li><li>Remove non-productive birds from the flock.<\/li><li>Remove sexing errors at around 6 to 7 weeks of age.<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Body weight Weight gain slows during this period. That is especially true for the weekly percentage increase of body weight. However, the growth rate must be always maintained throughout this period. Most of the skeleton and muscular systems have already been formed by now. On the other hand, fat disposal improves during this period. A [&hellip;]<\/p>\n","protected":false},"author":2192,"featured_media":11700,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[51,50],"tags":[],"class_list":["post-11699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-parent-stock","category-the-chickipedia"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rearing period (9 \u2013 15 weeks) - H&amp;N International<\/title>\n<meta name=\"robots\" content=\"noindex, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rearing period (9 \u2013 15 weeks) - H&amp;N International\" \/>\n<meta property=\"og:description\" content=\"Body weight Weight gain slows during this period. That is especially true for the weekly percentage increase of body weight. However, the growth rate must be always maintained throughout this period. Most of the skeleton and muscular systems have already been formed by now. On the other hand, fat disposal improves during this period. 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