Relationships between Ewe Milk Production and Composition and Preweaning Lamb Weight Gain

Torres-Hernández, Glafíro; Hohenboken, W. D.

doi:10.2527/jas1980.504597x

Cited by 43 publications

(24 citation statements)

References 34 publications

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“…Milk production increased with the size of the litter between single lambs and twins, in agreement with the results in other studies conducted in tropical regions [2,3,19]. Supplementing diets of Martinik ewes suckling twins resulted in a 50% increase in milk compared to the milk production from days 0 to 70 of 1245 g .…”

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confidence: 91%

Feeding supply of suckling Martinik ewes reared in intensive conditions: effects of supplement levels and litter size

et al. 2001

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-Experiments were carried out to determine the effects of supplementation upon milk production and growing performances of Martinik hair sheep. Ewes weighing 49 kg LW were used in a 2-season experimental study. In the first trial, 3 energy supplement levels were offered to ewes suckling single lambs. The adjusted level (A, 8 ewes) was supplied to ensure that the litter had a daily weight gain (DWG) of 250 g. High (H, 8 ewes) and low (L, 8 ewes) levels were 150% and 75% of level A, respectively. In the second trial, comparative use of the H level was studied with 3 animal requirement levels: ewes suckling single lambs (SI, same ewes as H ewes), twins (TW, 8 ewes) and triplets (TR, 6 ewes), respectively. The experimental design was replicated in a second lambing season. The basal diet was chopped Digitaria decumbens hay (0.6 UFL, 4.6% CP) offered ad libitum. Supplements were composed of maize (65%), soya bean (3%), fish meal (8%) and dehydrated alfalfa (24%). The milk production (MP) of ewes on the L diet was lower (P < 0.05) than that of ewes on the A and H diets: 1142, 1415 and 1518 g . d -1 , respectively. H-fed ewes fattened during the lactating period while A and L ewes respectively maintained and lowered their body condition score (BCS). Differences recorded for lamb DWG were low, but this trait reached a maximum of 248 g . d -1 . MP varied significantly (P < 0.05) according to the litter size. Individual DWG was different for single, twin and triplet lambs (P < 0.001): 261, 188 and 143 g . d -1 , respectively. In intensive breeding conditions, recommended daily energy allowances taking into account a good BCS of ewes for successive reproduction are 1.47 UFL for single-suckling ewes and 2.17 UFL for twin-suckling ewes, in order to obtain a DWG of the litter of 250 and 400 g . d -1 , respectively.Martinik ewes / supplementation / milk production / pre-weaning growth Résumé -Alimentation des brebis allaitantes Martinik élevées dans des conditions intensives : effets de différents niveaux de concentrés ou de la taille de portée. L'effet de la complémentation sur les performances des ovins allaitants a été étudié chez les brebis à poils Martinik pesant 49 kg de G. Alexandre et al. 214

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confidence: 91%

Feeding supply of suckling Martinik ewes reared in intensive conditions: effects of supplement levels and litter size

et al. 2001

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“…The growth rate of the single reared lambs in this experiment was up to 150 g/day faster than multiple reared lambs in Period 1, but the advantage declined to ~48 g/day in Period 2. Torres-Hernandez and Hohenboken (1980) reported the superior growth rate of single over twin lambs decreased as lactation progressed, with their growth rates being the same by weaning. Peart (1967) reported that twin lambs from ewes on a high plane diet had growth rates equal to single lambs from 6 weeks of age and had greater intakes of solid food per unit of metabolic body size.…”

Section: Discussionmentioning

confidence: 99%

The relationship of lamb growth from birth to weaning and the milk production of their primiparous crossbred dams

Morgan

Fogarty

Nielsen

et al. 2007

Aust. J. Exp. Agric.

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The growth rate of 667 single cross lambs from birth to 4 weeks (Period 1) and 4 weeks to weaning at 12 weeks (Period 2) was measured, along with the milk production of their 520 primiparous crossbred ewe dams over 3 years. The lambs were the progeny of Poll Dorset rams and first cross ewes lambing for the first time at 12 and 19 months of age. The first cross ewes were the progeny of Merino ewes mated to 30 individual sires from several maternal sire breeds, including Border Leicester, East Friesian, Finnsheep and Coopworth. Milk production of the ewes was measured at ~3, 4 and 12 weeks of lactation using a 4-h milk test. The effect of ewe milk production on lamb growth rate in Period 1 included a significant interaction with lamb birth and rearing type (P < 0.001). These regressions were 52 ± 18 g/day per kg/day for single born and reared, 24 ± 17 g/day per kg/day for multiple born and single reared and 18 ± 17 g/day per kg/day multiple born and reared lambs. The regression of ewe milk production in Period 2 on lamb growth rate in Period 2 was also significant (P < 0.001), although milk production in Period 1 accounted for more variation in lamb growth. There were significant interactions of ewe weight gain (from mid pregnancy to lamb weaning) with season in Period 1 (P < 0.01) and year in Period 2 (P < 0.001). There was also a significant interaction (P < 0.001) of year with ewe mid-pregnancy weight for lamb growth in Period 2. Lamb birthweight had a significant effect on lamb growth rate in Period 2 (regression coefficient 6.68 ± 2.57 g/day.kg, P < 0.01).

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“…Birth weight and ADG were reduced in lambs born to nutrient-restricted ewes, even when lambs were offered an ad libitum milk replacer diet (Meyer et al, 2010b). Milk production by the ewe and intake by the lamb are highly and positively correlated to lamb ADG (Burris and Baugus, 1955;Torres-Hernandez and Hohenboken, 1980;Wohlt et al, 1984;Snowder and Glimp, 1991). Although not all concentrations of nutrients were affected by gestational nutritional plane, totals for all nutrients measured except for butterfat were reduced in milk from ewes that were nutrient restricted during gestation.…”

Section: Potential Impacts Of Milk Productionmentioning

confidence: 91%

Nutritional plane and selenium supply during gestation affect yield and nutrient composition of colostrum and milk in primiparous ewes1

Meyer

Reed

Neville

et al. 2011

Journal of Animal Science

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The online version of this article, along with updated information and services, is located on www.asas.orgThis article is a U.S. government work, and is not subject to copyright in the United States. and lambs were removed at parturition. Colostrum was milked from all ewes at 3 h postpartum, and one-half of the ewes (n = 42) were transitioned to a common diet meeting lactation requirements and mechanically milked for 20 d. Colostrum yield was greater (P = 0.02) for HSe ewes than ASe, whereas CON had greater (P < 0.05) colostrum yield than RES and HIH. Colostrum Se (%) was greater (P < 0.01) for HSe than ASe. Colostrum from ewes fed HSe had less (P = 0.03) butterfat (%), but greater (P ≤ 0.05) total butterfat, solids-notfat, lactose, protein, milk urea N, and Se than ASe. Colostrum from HIH ewes had greater (P ≤ 0.02) solids-not-fat (%) than RES, whereas RES had greater (P ≤ 0.04) butterfat (%) than CON and HIH. Colostrum from ewes fed the CON diet had greater (P = 0.01) total butterfat than HIH. Total solids-not-fat, lactose, and protein were greater (P < 0.05) in colostrum from CON than RES and HIH. Ewes fed HSe had greater (P < 0.01) milk yield (g/d and mL/d) than ASe, and CON and HIH had greater (P < 0.01) yield than RES. Milk protein (%) was greater (P ≤ 0.01) in RES compared with CON or HIH. Ewes fed HSe had greater (P < 0.01) milk Se (μg/g and mg/d) than ASe on each sampling day. Milk from CON and HIH ewes had greater (P < 0.01) total solids-not-fat, lactose, protein, and milk urea N than RES. Total Se was greater (P = 0.02) in milk from ewes fed the CON diet compared with RES. Somatic cell count and total somatic cells were greater (P ≤ 0.05) in milk from CON than RES. A cubic effect of day (P ≥ 0.01) was observed for milk yield (g and mL). Butterfat, solids-not-fat, lactose, milk urea N, and Se concentration responded quadratically (P ≤ 0.01) to day. Protein (%), total butterfat, and total Se, and somatic cells (cells/mL and cells/d) decreased linearly (P < 0.01) with day. Results indicate that gestational nutrition affects colostrum and milk yield and nutrient content, even when lactational nutrient requirements are met.

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Relationships between Ewe Milk Production and Composition and Preweaning Lamb Weight Gain

Abstract: Thesis typed by Georgette Fosque for GLAFIRO TORRES-HERNANDEZ 2 respect to repeated observations on the same ewe. The correlation between subjective condition score and total milk production was -.25.

Cited by 43 publications

References 34 publications

Feeding supply of suckling Martinik ewes reared in intensive conditions: effects of supplement levels and litter size

Feeding supply of suckling Martinik ewes reared in intensive conditions: effects of supplement levels and litter size

The relationship of lamb growth from birth to weaning and the milk production of their primiparous crossbred dams

Nutritional plane and selenium supply during gestation affect yield and nutrient composition of colostrum and milk in primiparous ewes1

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