When the vent method is used to segregate day-old chicks into the two sex classes, it is soon evident that a large percentage of the female chicks possess a genital eminence. Canfield (1941) has illustrated nine different types of eminences which occurred in the White Leghorn pullets he ...
Nine hundred and sixty hatchable eggs were collected from the Parent flock of Rhode Island Red male and Fayoumi female, and set in three different methods of incubation. Each method was presented by four replications, and each replication consisted of eighty eggs. Twenty-four broody hens were ...
Germline Development of Genetically Female Nile Tilapia (Oreochromis niloticus) Reared under Different Temperature Regimes Sexual development: genetics, molecular biology, evolution, endocrinology, embryology, and pathology of sex determination and differentiationHabibah, A.N.; ... Holtz,Wolfgang,Hoerstgen-...
The possible role of a glucocorticoid action in long-term memory formation was studied, in day-old chicks, by using a passive avoidance task which chicks otherwise only retain for a few hours (< 10) after training. Thus, we examined the effects of intracerebral corticosterone administration on ...
developed reciprocal crosses of two chicken breeds, White Leghorn and Cornish Game, which exhibit major differences in body size and reproductive traits, and used them to determine the degree of cis versus trans variation in the brain, liver, and muscle tissue of male and female 1-day-old ...
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Based on day-old body weight, 172 Lingnan Yellow chicks were divided into three groups, large (>40 g), moderate (37 to 40 g), and small (0.05), which suggested that the small day-old chick body weight had minor effect on subsequent body weight and carcass performances in quality meat-...
developed reciprocal crosses of two chicken breeds, White Leghorn and Cornish Game, which exhibit major differences in body size and reproductive traits, and used them to determine the degree of cis versus trans variation in the brain, liver, and muscle tissue of male and female 1-day-old ...
1) day-old chick 日龄小鸡 1. After training 1-day-old chicks on one-trail-passive-avoidance tests,complicated biochemical and physiological changes occur in specific brai n regions. 一日龄小鸡在一次性被动回避实验(onet-rialp-assivea-voidancet-est)后,与记忆形成相关脑区的神经元在时间和空间上发...
The effect of an early skip-a-day feeding program on performance and body composition of broiler chicks fed high-protein realimentation diets was studied. ... U Santoso,K Tanaka,S Ohtani - 《Poult Sci》 被引量: 69发表: 1995年 Early skip-a-day feeding of female broiler chicks fed high-...