Effect of water deprivation and heat exposure on body weight loss and drinking capacity in four breeds of fowl (Gallus domesticus)

Effects of Water Restriction on the Growth Performance, Carcass Characteristics and Organ Weights of Naked Neck and Ovambo Chickens of Southern Africa

“…It could be postulated that NNK chickens were able to budget their water balance efficiently than OVB chickens. Strain differences in body weight loss were previously reported by Arad (1982) who noted significantly higher rates of weight loss in commercial Leghorns compared to native chickens during water deprivation under hot conditions. The decline in body weight of birds fed at 70% of ad libitum was comparable with results of Abdelsamie and Yadiwilo (1981) who reported a drop of 18% in body weight in broilers maintained on a 25% water restriction under hot conditions.…”

Effects of Water Restriction on the Growth Performance, Carcass Characteristics and Organ Weights of Naked Neck and Ovambo Chickens of Southern Africa

“…It could be postulated that NNK chickens were able to budget their water balance efficiently than OVB chickens. Strain differences in body weight loss were previously reported by Arad (1982) who noted significantly higher rates of weight loss in commercial Leghorns compared to native chickens during water deprivation under hot conditions. The decline in body weight of birds fed at 70% of ad libitum was comparable with results of Abdelsamie and Yadiwilo (1981) who reported a drop of 18% in body weight in broilers maintained on a 25% water restriction under hot conditions.…”

Effect of Short-term Water Restriction on Body Weight, Egg Production, and Immune Response of Local and Commercial Layers in the Late Phase of Production

“…However, there was a possible breed differences in body weight loss; a significant reduction in live weight was delayed until the second week of restriction in the local breed while a clear decline in body weight was obvious in the commercial group irrespective of level of restriction. Similarly, Arad (1982) reported a significantly higher rate of live weight loss in commercial Leghorn breed compared to native ones during water deprivation under hot conditions. This could be related to a possible variation in water expenditure and utilization between the two breeds since the local breed exhibited a lower water intake which indicating lower water requirements and utilization.…”

Effect of short‐term water restriction in hot season on some blood parameters and immune response to Newcastle disease vaccine of local and commercial layers in the late phase of production

“…The rise of plasma urea in the local layers in the present study might suggest a state of antidiuresis in the kidney and a decline in GFR. In this context, Arad (1982) reported that higher dehydration resistance in the desert‐adapted Sinai breed in relation to commercial White Leghorn hens was related to minimal water loss in the local breed. Blood urea nitrogen and plasma urea have been shown to be increased during severe dehydration induced by complete water deprivation for 48 h in Sinai and White Leghorn hens under severe hot conditions (Arad et al., 1983) and in severely water‐restricted Anak broilers (Iheukwumere and Herbert, 2003).…”

Effects of Water Restriction on the Growth Performance, Carcass Characteristics and Organ Weights of Naked Neck and Ovambo Chickens of Southern Africa

“…It could be postulated that NNK chickens were able to budget their water balance efficiently than OVB chickens. Strain differences in body weight loss were previously reported by Arad (1982) who noted significantly higher rates of weight loss in commercial Leghorns compared to native chickens during water deprivation under hot conditions. The decline in body weight of birds fed at 70% of ad libitum was comparable with results of Abdelsamie and Yadiwilo (1981) who reported a drop of 18% in body weight in broilers maintained on a 25% water restriction under hot conditions.…”

Effect of Short-term Water Restriction on Body Weight, Egg Production, and Immune Response of Local and Commercial Layers in the Late Phase of Production

“…However, there was a possible breed differences in body weight loss; a significant reduction in live weight was delayed until the second week of restriction in the local breed while a clear decline in body weight was obvious in the commercial group irrespective of level of restriction. Similarly, Arad (1982) reported a significantly higher rate of live weight loss in commercial Leghorn breed compared to native ones during water deprivation under hot conditions. This could be related to a possible variation in water expenditure and utilization between the two breeds since the local breed exhibited a lower water intake which indicating lower water requirements and utilization.…”

Effect of short‐term water restriction in hot season on some blood parameters and immune response to Newcastle disease vaccine of local and commercial layers in the late phase of production

“…The rise of plasma urea in the local layers in the present study might suggest a state of antidiuresis in the kidney and a decline in GFR. In this context, Arad (1982) reported that higher dehydration resistance in the desert‐adapted Sinai breed in relation to commercial White Leghorn hens was related to minimal water loss in the local breed. Blood urea nitrogen and plasma urea have been shown to be increased during severe dehydration induced by complete water deprivation for 48 h in Sinai and White Leghorn hens under severe hot conditions (Arad et al., 1983) and in severely water‐restricted Anak broilers (Iheukwumere and Herbert, 2003).…”

Effects of Water Restriction on the Growth Performance, Carcass Characteristics and Organ Weights of Naked Neck and Ovambo Chickens of Southern Africa

“…It could be postulated that NNK chickens were able to budget their water balance efficiently than OVB chickens. Strain differences in body weight loss were previously reported by Arad (1982) who noted significantly higher rates of weight loss in commercial Leghorns compared to native chickens during water deprivation under hot conditions. The decline in body weight of birds fed at 70% of ad libitum was comparable with results of Abdelsamie and Yadiwilo (1981) who reported a drop of 18% in body weight in broilers maintained on a 25% water restriction under hot conditions.…”

Effect of Short-term Water Restriction on Body Weight, Egg Production, and Immune Response of Local and Commercial Layers in the Late Phase of Production

“…However, there was a possible breed differences in body weight loss; a significant reduction in live weight was delayed until the second week of restriction in the local breed while a clear decline in body weight was obvious in the commercial group irrespective of level of restriction. Similarly, Arad (1982) reported a significantly higher rate of live weight loss in commercial Leghorn breed compared to native ones during water deprivation under hot conditions. This could be related to a possible variation in water expenditure and utilization between the two breeds since the local breed exhibited a lower water intake which indicating lower water requirements and utilization.…”

Effect of short‐term water restriction in hot season on some blood parameters and immune response to Newcastle disease vaccine of local and commercial layers in the late phase of production

“…The rise of plasma urea in the local layers in the present study might suggest a state of antidiuresis in the kidney and a decline in GFR. In this context, Arad (1982) reported that higher dehydration resistance in the desert‐adapted Sinai breed in relation to commercial White Leghorn hens was related to minimal water loss in the local breed. Blood urea nitrogen and plasma urea have been shown to be increased during severe dehydration induced by complete water deprivation for 48 h in Sinai and White Leghorn hens under severe hot conditions (Arad et al., 1983) and in severely water‐restricted Anak broilers (Iheukwumere and Herbert, 2003).…”