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Effect of birth body weight of piglets on their rearing up to the age of 10 weeks

100%

Krolewska B., Rekiel A., Wiecek J.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2014

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tom 53

The aim of the paper was to evaluate the effect of the birth body weight of the piglets on their productivity and survivability up to the age of 10 weeks. The observations covered the piglets born by 11 sows F1 of Polish Large White × Polish Landrace, inseminated by the semen of the boras (Duroc × Pietrain). The piglets were weighed on 1st, 21st, 35th and 70th day of life and the feed intake (per litter) was controlled. Depending on their birth body weight, the piglets were classifi ed into two groups: light (L) <1.5 kg (n = 52), heavy (H) ≥1.5 kg (n = 60). The mean general body weight of the piglets on 1st, 21st, 35th and 70th day was equal to 1.45, 5.09, 7.70 and 14.18 kg, respectively. In the groups, it was as follows: L – 1.17, 4.58, 6.91 and 13.00 kg; H – 1.70, 5.51, 8.29 and 15.12 kg, respectively (L–H, P ≤ 0.001). The deaths of the piglets in groups L and H amounted to 15.4 and 6.7%, respectively. In the situation of a free access of the progeny to mother’s feed and solid feedstuff, the obtained results indicate that the worse productivity, as expressed by lower feed conversion (by 10.5–16%), slower growth rate (by 12–20%) and lowered survivability (by 8.7 percentage points) of the piglets from groups L vs. group H, were the effect of considerably lower body weight of the newborn piglets as compared to their mean body weight

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Effect of birth weight of piglets on growth rate and rearing performance up to 8 weeks of age

100%

Ambroziak E., Rekiel A.

Annals of Warsaw University of Life Sciences - SGGW. Animal Science

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2017

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tom 56[1]

Effect of birth weight of piglets on growth rate and rearing performance up to 8 weeks of age. The aim of the experiment was to determine the effect of the birth weight of piglets on their rearing results up to 56 days of age, as expressed by growth rate and survival. Observations were made on 277 crossbred piglets from 22 litters of F1 sows (Polish Landrace ´Polish Large White) derived from crossbred boars (Duroc ´Pietrain), which were kept and fed the same way. Piglets were reared with mothers for 5 weeks and observed for 8 weeks. At 1, 7, 21 and 56 day of age, piglets were individually weighed. The body weight on day 1 of age served as a basis for dividing the piglets into groups I, II, III and IV (≤1.2; 1.21-1.39; 1.40-1.59; and ≥1.60 kg body weight, respectively). Coefficients of correlation were estimated between body weight on day 1 of age and at 7, 21 and 56 days of age, and daily gains. The mean body weight of the piglets on days 7, 21 and 56 differed between groups I, II, III and IV (P ≤0.01) and depended on the birth weight (r=+0.773, r=+0.567, r=+0.504). In the subsequent rearing periods, daily gains in groups I-IV increased and the differences between the groups showed similar relationships. Differences between groups II and III were small (P>0.05), and those between groups I and IV considerable and highly significant. With the increasing mean body weight at birth, piglet survival increased and was higher in group IV vs I by 13.64 percentage points. The birth weight ≥ 1.60 kg ensured the best growth rate and survival of the piglets.

3

Heterosis estimates for birth weight in crossbred dairy cattle

84%

Skrzypek R.

Animal Science. Scientific Papers of Agricultural University of Poznan

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2002

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tom 04

4

Application of the hypothesis of developmental origin of health and diseases (DOHaD) in epidemiological studies of women at reproductive age and pregnant women in Poland

67%

Wojtyla A.

Annals of Agricultural and Environmental Medicine

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2011

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tom 18

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nr 2

5

Factors determining birth weight in crosses of dairy cattle in Germany

67%

Skrzypek R.

Roczniki Akademii Rolniczej w Poznaniu. Zootechnika

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2001

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tom 53

6

Niezakaźne przyczyny sprzyjające przedodsadzeniowej śmiertelności prosiąt

34%

Czyzewska-Dors E., Dors A.

Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

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2018

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tom 13

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nr 2

Ograniczanie wyników

2 Annals of Warsaw University of Life Sciences - SGGW. Animal Science

1 Animal Science. Scientific Papers of Agricultural University of Poznan

1 Annals of Agricultural and Environmental Medicine

1 Lecznica Dużych Zwierząt. Ogólnopolski Kwartalnik dla Lekarzy Weterynarii

1 Roczniki Akademii Rolniczej w Poznaniu. Zootechnika

2 Rekiel A.

2 Skrzypek R.

1 Ambroziak E.

1 Czyzewska-Dors E.

1 Dors A.

1 Krolewska B.

1 Wiecek J.

1 Wojtyla A.

1 2018

1 2017

1 2014

1 2011